Hazardous Area Lighting | ATEX/IECEX Explosion-Proof LED Systems

Petrochemical plants, refineries, mining operations, and grain-storage silos contain explosive atmospheres classified under ATEX Directive 2014/34/EU and IEC 60079 standards. Our explosion-proof LED luminaires deliver safe, efficient illumination in Zone 1, Zone 2, Zone 21, and Zone 22 environments without compromising lumen output or color quality. Hazardous-area lighting is governed by some of the most stringent safety regulations in the world: ATEX Directive 2014/34/EU in Europe, NEC Articles 500–506 in North America, and IEC 60079 series globally. These standards classify explosive atmospheres by Zone (gas: 0/1/2; dust: 20/21/22) and by ignition-energy group (IIA/IIB/IIC for gases; IIIA/IIIB/IIIC for dusts), requiring luminaires that prevent any possible spark, hot surface, or electrostatic discharge from igniting the surrounding atmosphere. Our explosion-proof LED portfolio covers the full spectrum of hazardous-area classifications with certified flameproof (Ex d), increased-safety (Ex e), encapsulation (Ex m), and intrinsic-safety (Ex i) protection concepts. Every model carries ATEX and IECEx certificates from notified bodies (CSA Group, Sira, DEKRA), with installation training provided by certified CompEx technicians to ensure that the lighting system is as safe in the field as it was in the test laboratory.

Explosion-Proof High-Bay & Flood

Flameproof enclosures (Ex d) with cast-aluminum bodies and tempered-glass windows rated for 20J impact (IK10).

Zone 1 (Gas Group IIC) and Zone 21 (Dust Group IIIC) certifications with ATEX and IECEX test reports.

Operating temperature range -40°C to +55°C; thermal derating curves provided for ambient >40°C installations.

Flameproof enclosures (Ex d IIC T6 Gb) utilize cast-aluminum bodies (LM25TF alloy) with precision-machined flame paths (0.15 mm gap, 25 mm length) that cool escaping hot gases below ignition temperature before they reach the external explosive atmosphere.

Tempered-glass windows (8 mm, thermal-shock resistant to 200°C ΔT) withstand 20J impact (IK10) from dropped tools and debris in industrial maintenance operations.

Temperature-class T6 (maximum surface temperature 85°C) permits safe operation in ambient temperatures up to +40°C with gas groups IIA (propane), IIB (ethylene), and IIC (hydrogen/acetylene).

Thermal-derating curves are provided for ambient >40°C installations (e.g., Middle East refineries), ensuring T-class compliance up to +55°C with reduced output.

Emergency & Exit Lighting

Self-contained battery backup (3-hour duration) with Ex e increased-safety terminal enclosures for Zone 1 battery packs.

Photoluminescent exit signs with 800 mcd/m² initial luminance and 50 mcd/m² after 60 minutes per ISO 17398.

Self-contained battery backup systems employ lithium iron phosphate (LiFePO₄) cells in Ex e increased-safety terminal enclosures rated for Zone 1 installation, avoiding the need for Zone 2 battery rooms.

Battery-management systems (BMS) monitor cell voltage, temperature, and state-of-health, with fault signals transmitted via RDM or hardwired relay to the central control room.

Photoluminescent exit signs (ISO 17398 Class C) provide 800 mcd/m² initial luminance and 50 mcd/m² after 60 minutes in total power-loss scenarios, guiding personnel to muster stations without electrical dependency.

Emergency-lumen output is maintained at ≥10% of normal output for 3 hours, satisfying IEC 60079-28 emergency-lighting requirements for hazardous-area escape routes.

Linear & Hand-Portable

Zone 2 linear LED battens (Ex nR) with through-wiring for long corridor runs in tank farms and pipeline galleries.

Rechargeable portable Ex-rated LED floodlights for maintenance inspections in confined spaces.

Zone 2 linear LED battens (Ex nR) feature through-wiring terminals that allow continuous 50 m runs from a single power feed, reducing cable glands and junction boxes in long corridor applications (tank farms, pipeline galleries, underground cable tunnels).

Driver electronics are encapsulated in polyurethane compound (Ex m) with thermal conductivity >1.5 W/m·K, ensuring heat dissipation from power semiconductors to the housing without air voids.

Hand-portable rechargeable LED floodlights (Ex ia IIC T4) provide 2000-lumen output for 4 hours from intrinsically safe battery packs (LiSOCl₂ primary or NiMH secondary), suitable for confined-space entry and vessel-tank inspection where mains power is unavailable.

Certifications & Documentation

ATEX 2014/34/EU Type Examination Certificates (ECAS, Sira, CSA) and IECEx CoC for global project acceptance.

Installation training and hazardous-area inspection services provided by certified CompEx technicians.

ATEX 2014/34/EU Type Examination Certificates are issued by EU Notified Bodies (NB 0474 CSA Group, NB 0518 Sira) with full technical file documentation (drawings, material specs, test reports) available for customs clearance and project-acceptance inspections.

IECEx CoC (Certificate of Conformity) and QAR (Quality Assessment Report) enable global market access without redundant testing in Australia (EESS), Brazil (INMETRO), South Korea (KTL), and China (CCC/Ex).

Installation and maintenance training is delivered by CompEx-certified instructors (Ex01–Ex04 modules) at client sites or our training centers, with competency certificates valid for 5 years.

Hazardous-area inspection services include: initial area classification verification, equipment-register auditing, and periodic inspection per IEC 60079-17 (intervals: 3 months for Zone 0/20, 12 months for Zone 1/21, 24 months for Zone 2/22).

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Further reading: Hazardous Area Lighting Solutions · Coal Mine Explosion-Proof Lighting Case · ATEX-Certified LED Lighting Guide